A. which will provide them with an I-20 form. Since it acts as documentation of enrollment and eligibility for the F1 visa, this form is ess500 in 1 game apkential. Prior to submitting their visa application, students must pay the SEVIS fee after receiving their Form I-20. The DS-160 form, which is the Online Nonimmigrant Visa Application form that all nonimmigrant visa applicants must fill out, must then be completed by applicants.